Dispensing device



March 27, 1945. R T CQRNEUUS u 2,372,360

.I DIsPENsING DEVICE Filed March 21, 1941 2 sheets-sheet `1 4F16 5 o7los figli ,47

gmc/whom w; 106 2M MM March 27, 1945- R. T. CORNELIUS DISPENSING DEVICEFiled March 2l, 1941 2 Sheets-Sheet 2 Richard v"[`. Cornel-lus PatentedMar. 27, 1945 UN [TED STAT ES PAT N T F F I C E DISPENSINGDEVIGE.

Richardi'l. Cornelius, Minneapolis, ,.Mlapplieatieumamh-21, unserm-Nn.384,437

r1 claims. (maas-21) My invention'V relates .toibeverage dispensing:devicesand.l particularly. to devices.4 adapted to. be used. in.mixing.l syrupszwith carbonated. Water..

A; still further. object. of the. invention resides inprovidinga.miidngdevi'ceinwhicn the amount of syrup may be accurately measured.

A feature of theinvention resides in pruvidin a devicewhich willlbeextremely simplein.r conmeans being.y yat allA timesin. communicationwiththechamber. f y

Another object. .oi the. invention resides in providing. means operableonoccasion for controlL ling, the .egress of. the carbonated'Water trom said chamber and; in constructing said means. sol that, whenin. operation, it offersless insistance to the flow Aof.` the water thanthelrstnam'ed means. to:` procure. a reduction ofi. pmsslne'- in thepressurechamber., l v f Another lobject ofthe invention resides 'inipro@ viding means. for controllingl vthe' -dispensin'gfvof syrup andmeans operable:v upon 'reduction in pressure in; said pressurefchamberfor controlling saidllastnamed means. f f Another' object oftheinventionreside's-in providing pump. meansnf'or, dispensing thebsyrup; and inproviding. means opera-ted by the-reduction. of pressure inthe pressure'chamberlforcontrolling the. operation'I fof said; pump'means.

Aieature of the `invention resides-1in providing two 'expansiblechambers having diaphragme therein, one of said vdiaphrarms beingsub-jectto the .pressure the pressureecnamberf andserving to move theother diaphragm, the otherv dia-h phragmr serving to pump thesyrup'.Other IobjectsA of the invention reside in. 'the novel combination andarrangementlofpartsand inthey details of constructionhereinafterillustrated and/or described. i

In. the. drawings: Fig. 1 is a plan sectional View4 ofwabeveragedispensing device embodying my: invention 'and takenonline of Fig. 2;Fig.` 2V isxan elevational Asectional View.' o'if 'the invention: taken'on line '2L-lof Fi'gaili Fig.' 3'isaasectional; View.` similar. tlig...2 :sh-owing.- th-e partsin alteredpcsitionf.

Fig. 4 is a fragmentary' plan. sectional view taken online 4-'4 of Fig;3;

liafis aA detail sectional view.v o onefof.- the valves ofitheinvention.

IVLyl invention comprisesl a: case.y lf which is constructedi with abody-'portion Hf having: an upwardly` facingi surface l2: and adownwardly facing-surface I3. overlying tliez surface. l2:7 is

a. cover.y I4' and lattachedx to; the lsurface.` 1:3 is.X a

cap I 5; These' various parts .arefse'cureditogether toform. withintherinteriorof theacase a pressure chamber I6, an upper compartment I'Iandia lrvericompartment t8. il.' and I' arev separated` by a. partitionIB and the said two.v compartments. are disposed. one above 'the'A otheras clearly shownimFigs; 2ca1'rd3a 'Ithecover t4 isrformed' with a; neck2.1i which.. is constructed.withapassagewayf 22' communicatingwith:thefpressurechamber Inti Attached to this neoleisi'a faucet23.-which.-wi1lf.now be described in detail.

The faucet 23 isconstructed with a bodyportionldintegral with the necki211' ofca'se. lill. The body portion` 2d is provided with a verticalpassageway. 25 which communicateswithi the-[passageway andwhichisyprovidedat its lowermost endl with a= valve seat 26;lThe'upperendl 2150i the body 'portion 2'4 isithreaded t'creceive.abush'- ing '2li which isI vadapted tov hold in position a tubular.guide 33. rI`his guide slidablysupportsl a plunger 29 Plonger Zilisrecessed asiindicated at 3| to engage a shoulder 32 formed on thet'ubular. guide 33. This shoulder limitsfthe upward movement of. theV saidlplunger;

Withinfthe passageway 25 is arranged a valve vSteur 3111 which hassecuredl to the'- lower end thereof-1 a valve head 3% adapted' to4 seat`against thevalve seat '26; 'The'valve stern- 341 is guided atiitslowerend in a perforated collar3l6m0unted in the lower end of the bodyvkportion 254. The upper end of the valvelstem 34 hasattacliedto itacylindricalV head 3l which is slidab-lv mounted in:- a washer' 381clamped vtol theoupper 'end l2li of th'e body 'portion 213% by theVbushingy. lso clamped between: said kbushing and the bodyV portion. 211iisar small diaphragm' 39f'whi'ch is clamped to`v the'v valve` stem= 34betweena nut'fli and the head 31aV A'. compression coil" springyllencircling thestem `31| and seatedv againstrthenut 41| and g-uideSBurges thevalvesheadf'S Erintc engagement with thee valve seat 255;Another coil .spring 43 actingl'between thewasher :it-andthe plunger'259 urgesfsaidiplunger upwardlyand awa-y from the The twov compartmentsmeans of any operating mechanism such as a lever or the like, valve stem34 is depressed and the valve head 35 disengaged from seat 28 to permitof egress of liquid from the mixing chamber I6 and out of the device. Todischarge the liquid from the faucet 23 a nozzle 45 is employed which isattached to the lowermost end of the body portion 24 in which the valvehead 35 is movable.

Disposed on the surface I3 of the body of casing I and between said bodyand the cap I is `a diaphragm 46. This diaphragm is clamped in positionbetween these two parts by means of screws 41 which p'ass through thecap I5, the body I| and are threaded into the cover I4. The saiddiaphragm divides the compartment I8 into two chambers 48 and 49, whichchambers are expansible and the volume of which is altered when thediaphragm is moved toward and from the partition I9.

Overlying the surface I2 of the body |I and disposed between said bodyand the cover I4 is another diaphragm 53. This diaphragm is held inposition between the said partition by means of the screws 41 previouslyreferred to and by means of other screws 54 which extend through thebody II and are threaded into the cover I4.

The diaphragm 53 divides the compartment I1 into two expansible chambers55 and 56, the chamber 56 being disposed adjacent the partition I9.

The diaphragm 53 has an extension 58 which extends outwardly beyond theconnes of the compartments I1 and I8 and which is disposed in proximityto the portion 55 of the body I I, as well as the pressure chamber I6.This extension covers an annular valve chamber 52 formed in this part ofthe body. The said portion of the body is constructed with a number ofconcentric valve seats 51 which are adapted to be engaged by thediaphragm extension 58 which serves as the movable element of a valveindicated in its entirety by the reference numeral 59. The diaphragmextension 58 has a hole 6| in it which communicates with the pressurechamber I6. e An annular leaf spring 62 engages the upper surface of thediaphragm extension 58 and urges the same into engagement with the valveseats 51. This spring is disposed within a recess 63 in the cover I4 andengages the lowermost wall 64 thereof.

The chamber 49 formed in compartment I8 is vented to the exterior andperforms no particular function in the instant invention. The chamber48, however, is connected by means of a passageway 5l with the valvechamber 52, previously referred to so that operation of the valve 59will bring the chamber 48 into communication with the mixing chamber I6.

The partition I9 is formed with a bore 65 concentric with the diaphragms46 and 53 which are disposed one above the other and in concentricrelation. Slidably mounted in this bore is a sleeve 66 which makes afluid-tight connection with the bore 65 through a packing gland 61. Thissleeve at its upper end passes through the diaphragm 53 and also throughtwo plates 68 and 69 overlying said diaphragm on opposite sides thereof.A nut 1| screwed upon the extreme upper end of the sleeve` 66 clamps thesaid diaphragm and plates against a shoulder 12 formed on said sleeve.The sleeve 66 is similarly constructed at its lower end and passesthrough the diaphragm 46 and through two discs 15 and 1li overlying saiddiaphragm upon the upper and lower surfaces thereof. A nut 11 screwed tothe lower end of the said disc clamps these parts in place. By means ofthis construction the two diaphragms are secured together and are causedto move in unison.

The upper end of the sleeve 66 is formed with a head 18 which isthreaded to receive a rod 19. Rod 19 passes freely through a hole 8| inthe cap I5 and is threaded at its lower end, as designated at B2, toreceive a nut 83 and a lock nut 81|. The nut 83 engages the lowermostsurface of the cap l5 and limits the upward movement of the twodiaphragme 53 and 46. By adjusting the said nuts the volume of theexpansible chambers can be manually regulated at will. A compressioncoil spring 85 encircles the rod 19 and is disposed within the bore 86of the sleeve 66. This spring is seated at one end against the head 18of said sleeve and at, its other end against a washer 81 overlying thecap I5. By means of this spring the two diaphragms areurged upwardly totheir extreme position determined b-y nut 83, as shown in Fig. 3.

Wnen the device is to be used for preparing soft drinks or similarbeverages, carbonated water under pressure is directed into the chamber55 by means of a construction shown in Fig. 1. For this purpose a tube88 is employed which is disposed within a larger tube 89. Both tubes arewound in the form of a coil as indicated by the reference numeral 9|,which coil may be placed at any desired locality between the source ofcarbonated Water and the mixing device. The tube 88 has a fitting 92connected to it which is secured to a bushing 93 screwed into a wall ofthe cover I4. This bushing brings the passageway ,in the tube 88 intocommunication with the chamber 55 through the said bushing. Attached tothe tubes 88 and 89 at the ends of the tube 89 are suitable fittings 94and 95 by means of which trie annular passageway between the two tubes,f may be connected to suitable pipe connections 96 and 91. The tube 89forms a jacket encircling the tube 88 through which cooling liquid maybe circulated to maintain the carbonated water passing through said tubeat a proper reduced temperature. The tube 88 is of such dimensions as tooffer an appreciable resistance to the flow of the carbonated water sothat, when faucet 2B is opened a material reduction in pressure in thechamber 55 and in the .pressure chamber I6 occurs which is utilized inthe operation of the diaphragms 53 and 46 as will be hereinafter morefully described.

The syrup to be mixed with the carbonated Water is directed to the bore98 of a fitting 99 which is screwed into the body II of case I0. Thebody II of case I0 has a passageway |02 which communicates with the bore98 and which brings said passageway into communication with the chamber56. The fitting 99 has a check valve IOI in it which permits of entry ofsyrup vinto the device but prevents flow of syrup back out of the saiddevice.

In the partition I9 is provided a check valve |03, best shown in Fig. 5.A passageway |04 extends through the partition I9 and is tapered to forma valve seat |05. A valve head |06 seats against this valve seat. Thisvalve head has a stem |01 extending through the lpassageway I 04, whichstem has secured to it a spiral spring |08 received with a recess |09 inthe uppermost porstruction tneuval-ve .head im; .iis'fm-aintained inclosing @position funtil @the :difference :1in pressure within'the 'two:chambers .256 and i419 causes "..tne

sameito lopen against '.thezlactinn :offspring f I 08. l

yiattached.tottl'ieiuppermost:portionzofitheacover i'dxisa .jacket Hlwhich .iprovidesarzspace mi2 overlying the chamber 55,Twospipeiconnections I\If4 and v1li-'5 A:are .provided for theejacket .MI by rected yinto :and :out of .the space Allf.l:2.f Tlhusfthe :coveri|4may be keptiat the properiptemperature .to prevent undue pressure'within the? device a'nd temperature. t l

The Aoperation :of the :.inventioniiseas lzfo-llows: when .the e'tvvoJ.diaphragme :53 and 46 .rnovezupf -wardly, `valve 1.03 .is closed fandLthecdiaphragm to :maintain the :carbonated -water :fat ame-.proper :'53:creates fa vsuction:inf-chamber 115,6 vvwhich; opens the check valve.*I 01 an'ddrawsaa Ipredetermined amount of syrupinto.f-said"'.cl1amber...frorn fthe source fof syrup usupply. `When ,fthe:diaphragm 53.1reachesitsuppermost .positionfascontrollediby.nutt8'3aengagingnthe':lovverrnost, portion 'of tlzeoap l51thexcheckvalve Illflsclosesand-:cuts off :the l ingress .of syrup. 'During '.theusewof :the device,

zas; previouslyfexplainedj the lpressure fin-fthe pressure/chamber IIBand.the.chamberi'becomes ap- ',preciably reduced 'due v.to theresistance-aiorded by the'tubeflr to the passageway ;of `carbonatedWater'throughthelsame. :While.thefpressurefisfso reduced :thespringf.'forces` the. Ltwodiaphragme e3 and :46 upwardly sto f'draw, .the.=syruprinto l the chamber 56. f

:Upon closing,r 'of the .faucet2'3the pressure :in .fthe chamberfiicommences-"td buildup until ythe asaid pressure is the same :as at :thebeginning l of "the col'vSl. JAS this/occurs the .diaphragmffis "forceddownwardly .against the actionfofzsprng l8'5 and f said `springcompressed. .During @such movement the check @valve f|3f-isf opened-,and-the :syrup contained lwithin 5 the 'cl'iarnber 56 '-.di-schargedthrough .1 the passageway m4 and into fthe chamber M8. At fthe :sameftime .that .the diaphragm '53 iis ytraveling downwardly ,.to .fcreate.pressure in `.chamber 256 to eject the'y syrup: there,- .from,.diaphragm 41B is .likewise ftraveling y.downe wardlyand createsareductionIofpressurelinfthe Lchamber 'fl-8 which closes the Valve r5.9and `:also --aids .in opening :the vvalve 1.03 .and tdrawing .the xsyrupfron'rthe clamberGrandinto thechamber 48. When thediaphragrnsreaclmtheir lowermost position, which is determined by the plate.-Tffeneasing the :capita :valve e |03.A closes.- andl theisyrup `drawnintosaidfchamber is-cut Aoil .from the syrup iis .f'dis'c'h'arged forreach glass cof beverage wnichiisfaccuratelytmeasured and whichicanrbecontrolled in amount by adiustmentiofthetnuts andffi'. p v

u .Thef'advantages .ofrimy unven'tionriaresmanifest;

An :extremely simple and practical .construction i is "..provided by:means 'of '.which .1a predetermined lainoutio ssyrupimayszbedelivere'cllforteachz glass of beverage drawn .frorn 'the device. `ilhedevice functions?solelyezupcn 'reduction fin spressure :in .therpressurechamberwhereby. no complicated or intricate u.parts .arei reeduiredlforlsuccessfuleoper- 'ationof :the invention. "The .device is extremely'smalliand toom-pact rand f'mayibe :easily :installed in closefquarters. By the proper :cooling Iof athe -case fof. my. invention'andithe l coil. formen-ducting the ".car'bon'ate'd Awater `:to .therdevice, `'excessive pressures .are prevented, 'thus lmaking .thedevice'operate positively and procuring thegproper. dis- .pensing of thecsyrupland .the #carbonated water. With 'my inventiontth'e'zquantity of :syrup@furnished may be @readily regulated :rand z controlledwitbiniclose'limits. 1 I

While :I have described theinvention las spar.- ticularly useful for raI.device 1in .fmixing and :dis-

` pensing. beverages,.lit Vcan readily becomprehendchamber 56. .TheIparts .thensbecome arrangedqas .shown in Fig. 2,. which illustratesfthe .normalgpo- Asitons 1 of the parts when v.the iaucetis closed. .If.nov/.the 4faucet is;openedrthapressure within the lvchambers andV 1,6is reduced .and spring' ..85 moves twodiaphragms 53 andJlS upwardly..This .causes injection ofcanew chargeofsyrup..into ,the .chamber v5E.zand at the same time :causes .discharge ofthe syrup. in thachamber-SEthrough `1 cassageway15!` -and valve -:59 .vinto the ...pressurechamber` ,4.5. -Thus a\.predetermined .measured .quantity osyruplisdischarged intothe-r1owing Vstream -.of carbonated Awater r as the same;..passe s .through the. ..pressure .chamber rI8 land, intotlfie`7.faucetli .When-the carbonated Water.'is..being 4lled 4inra glass of acertainsize a predetermined samount y.of carbonatedwateryis .thusmeasured `and s likewisea 1predeterminedvamcuntoisyrupds :measuredbyithepumpin'g action o f vthe .dia- .phra'gms 153 `-and 46. :Thus 1.a.-xedfamount ,of

edthat thedevicernay.` be used for anyotherfkind Changesinthe specific:form ofnny-invention, .asf hereindisclose'dmayibe. made-withinftherscope of what is claimed `Without departing :from fthespirit '.o'f my.v invention.

.Having described my invention, what I .claim .as new; and'` desire toprotectby .LettersePatent is:

.-1.,.A .dispensing .device .having va y:pressure chamber, means for.conducting -a .fluid :under pressure into lsaid .pressurechambersaidmeans including a xedresistance .for .controlling v4the rate ofvingress .of the. fluid into said vchamber, said .means ,being at 4alltimes in .direct .open

lcommunication .with said chamber, .means operable v:on "occasion for-.controlling `the `.egress .of fluid'from said chamber,v said firstandsecond named means .being both .in communication lwith' said chamberduringegress offluid .therefrom said last namedmeans when.inoperationzofering less resistance .to the iiow of the fluidthan.said-.first named means to procure .a-.reductiondn pressurein said.pressure chamber, -means `-for Ameans being 1 both in communicationVwith .said

chamber during egress of .uid therefromvsaid last named means when inoperation joiering less resistance tothe flow of the .'uidthan said rstnamed means .to .procure a reduction l.in

pressurein said pressure .lchamber, meansforming .an Aexpansiblechamber, .a movable Nmember operable .in said.expansible-,chamber tovary-.the

lvolume thereof, .means for. .conducting a .second fluid into saidexpansible chamber, ..said-movable memberserving .to dischargethecontent's.of ..said expansible .chamber-.into said` pressure chamber,and means operable upon fredutieebimpressive in said pressure chamberfor controlling the operation of the movable member Within saidexpansible chamber. Y

3. A dispensing device comprising a case having a pressure chamber,means for conducting a fluid under pressure into said pressure chamberand for controlling the ingress of the iluid into said chamber, saidmeans being at all times in communicationl with said chamber, meansoperable on occasion for controlling the egress of iluid from saidchamber, said last named means when in operation offering lessresistance to the flow of the fluid than said first named means toprocure a reduction in pressure in said pressure chamber, said casehaving a partition forming two compartments disposed adjacent oneanother, a diaphragm in one of `said compartments forming With saidpartition an expansible chamber and being movable to vary the volumethereof, a second diaphragm in the other of said compartments formingwith said partition a second expansible chamber and with a portion ofthe case on the opposite side thereof a third expansible chamber, saidsecond diaphragm being movable to yvary thevolume of said secondexpansible chamber and responding in movement to the variation inpressure in said third named expansible chamber, valve means forbringing said first named expansible chamber into communication withsaid pressure chamber, Valve means for bringing said second namedchamber into communication with said iirst named chamber, said thirdnamed chamber being at all timesin communication With said pressurechamber, means for conducting a second fluid into said second namedexpansible chamber, and means for connectingsaid diaphragms together tocause the same to operate in unison.

4. A dispensing device comprising a case having a pressure chamber,means for conducting a fluid under pressure into said pressure chamberand for controlling the ingress of the fluid into said chamber, saidmeans being at all times in communication With lsaid chamber, meansoperable on occasion for controlling the egress of fluid from saidchamber, said last named means when in operation offering lessresistance to the flow of the fluid than said iirst named means toprocure a reduction in pressure in said pressure chamber, said casehaving a partition forming two compartments disposed adjacent oneanother, a diaphragm in one of said compartments forming With saidpartition an expansible chamber and being movable to vary the volumethereof, a second diaphragm in the other of said compartments formingwith said partition a second expansible chamber and with a portion ofthe case on the opposite side thereof a third expansible chamber, saidsecond named diaphragm being movable to vary the volume and said secondexpansible chamber and responding in movement to the variations inpressure in said third named expansible chamber, said case having apassageway for bringing said first named expansible chamber intocommunication with said pressure chamber, 'a check valve for preventingflow of fluid from said pressure chamber to said first named expansiblechamber, said partition having a passageway therein for bringing saidsecond named expansible chamber into communication with lsaid iirstnamed expansible chamber, a check valve in said second named chamberbeing at all times in communication with said pressure chamber, meansfor conductfing a secondv fluid into said second named expansiblechamber, a check valve for preventing flow through said means out ofsaid second named expansible chamber, and means for connecting saiddiaphragms together to cause unitary movement thereof.

5. A dispensing device comprising a case vhaving a pressure chamber,means for conducting a iluid under pressure into said pressure chamberand for controlling the ingress of the fluid into said chamber, saidmeans being at all times in communication with said chamber, meansoperable on occasion for controlling the egress of fluid from saidchamber, said last named means when in operation oering less resistanceto the flow of the ilud than said first named means to procure areduction in pressure in said pressure chamber, said case having apartition forming two compartments disposed'adjacent one another, adiaphragm in one ofv said compartments forming with said partition anexpansible chamber and being movable to vary the volume thereof, asecond diaphragm in the other` of said compartments forming with saidpartition a second expansible chamber and with a portion of the case onthe opposite side thereof a thirdv expansible chamber, said second nameddiaphragm being movable to vary the volume and said second expansiblechamber and responding inv movement to the variations in pressure insaid third named expansible chamber, said case having a passageway forIbringing said rst named expansible chamber into communication With saidpressure chamber, a check valve for preventing flow of fluid from saidpressure chamber to said rst named expansible chamber, said partitionhaving a passageway therein for bringing said second named expan'siblechamber 'into communication with said iirsif, named expansible chamber,avcheck valve in said second named passageway for preventing flow fromsaid first named expansible lchamber to said second named expansiblechamber, said third named expansible chamber being at all times incommunication `with said pressure chamber,r

means for conducting a second iiuid into said second named chamber, acheck valve for preventing flow through said means out of said secondnamed chamber, and meansextending through said partition and connectingsaid diaphragms together for causing simultaneous movement of saiddiaphragms.

6. A dispensing device comprising a case having a pressure chamber,means for conducting a uid under pressure into said pressure chamberpassageway for preventing flow from said first named expansible chamberto said second named expansible chamber, said third named expansible andfor controlling the ingress of the fluid into said chamber, said meansbeing at all times in communication with said chamber, means operable onoccasion for controlling the egress of iiuid from said chamber, saidlast named means when in operation oiiering less resistance to the flowof the fluid than said flrst named means to procure a reduction inpressure in said pressure chamber, said case having a partition formingtwo compartments disposed adjacent one another, a diaphragm in one ofsaid compartments forming with said partition an expansible chambermovable to vary the volume thereof, a second diaphragm -in the other ofsaidy compartments forming with said partition a second expansiblechamber and with a portion of the case on the opposite side thereof athird expansible chamber, said second named diaphragm being movable toVary the volume and said second named exjpansible chamber and respondingin movement to 8, Adispensinghdevice comprising'a case havthe-variationsinprssurfin ,said Y' M ing apressure chamber, "means forconducting a expansible chamber AMase"k av g apassageuidfiirde'rpressurefintosaid pressure, chamber way 'fior bringingidhrs't -nariiedj and Yfor ce rolling i 'ingressjorthe nuid'intorhlamber'intofc'oihm Aiea' tfiolrfivllisi.` 5 ffsed'gha ,erfsaidfiii'ans beingiatall timesin chamberL-a'clieck Va Vemfd-rl preventing lio'communication with'saidl cliamb-en: means loper"- iinid "iromsaid y r`hainber tof'aid l fable @aoccasion l 'eontreiiihg the egressY ofnamedex ansibl ham'ber id partition `g viiiiildfro 'id' aidl'astna'n'ied means en in. @per adn, die .ales rsistance' ,to the flovvloil.the'iiufidl 'than s'aidt' t namedl means Said pleS- @passageway 'therein,for e .riging'said se. naniedfexpasiblefchambr nto c n u y with gaidggtgifle i passipieena berjaeneek to procure 'ared'dcti'oh in pre valveinsaid .fsecondfha'ihedpassageway fer piee sureeharnbeneaid CaSe-,1.1Ying ap venting ovvh'frb-i'dsaid.: iirstnam'edexpansble 'wo'c'"chambertosaid's'condna ber, said third; named eiipan at all tifiie'sAincihmuiiication with said pressure chamber, means for conducting asecond iiuid diaphragm in the other of said compartments into saidsecond named chamber, a check valve forming with said partition a secondexpansible for preventing iiow through said means out of chamber andWith a portion of the case on the said second named expansible chamber,means opposite side thereof a third expansible chamextending throughsaid partition and connecting ber, said second named diaphragm beingmovsaid diaphragms together for causing simultane able to vary thevolume and said second named ous movement of said diaphragme, saidsecond yexpansible chamber and responding in movenamed diaphragm beingurged towards said parment to the Variations in pressure in said thirdtition through pressure created in the pressure named expansiblechamber, said case having a chamber, and resilient means for urging saiddiaf passageway for bringing said first named expanphragm for movementin the opposite direction. sible chamber into communication With saidr7. A dispensing device comprising a case havpressure chamber, a checkvalve for preventing ing a pressure chamber, means for conducting a owof fluid from said pressure chamber to said fluid under pressure intosaid pressure chamber .30 first named expansible chamber, said partitionand. for controlling the ingress of the uid into having a passagewaytherein for bringing said said chamber, said means being at all times insecond named expansible chamber into comcommunication with said chamber,means op- 'munication with said rst named expansible erable on occasionfor controlling the egress of chamber, a check valve in said secondnamed iiuid from said chamber, said last named means passageway forpreventing now from said first When in operation oiering less resistanceto the named expansible chamber to said second named iiow of the uidthan said rst named means to Y expansible chamber, said third namedexpansible procure a reduction in pressure in said pressure chamberbeing at all times in communication chamber, said ca se having apartition forming with said pressure chamber, means for conducttwocompartments disposed adjacent one another, 4o ing a second uid intosaid second named eX- a diaphragm in one of said compartmentsformpansible chamber, a check valve for preventing ing with saidpartition an expansible chamber flow through said means out of saidsecond` movable to vary the volume thereof, a second dianamed expansiblechamber, means for connect phragm in the other of said compartmentsforming said diaphragms together to cause unitary ing with saidpartition a second expansible chammovement thereof, and a threaded rodattached ber and with a portion of the case on the oppoto said lastnamed means and extending through site side thereof a third expansiblechamber, said the case, said rod being guided for movement in secondnamed diaphragm being movable to vary the direction of movement of thediaphragm, and the Volume and Said seCOrid eXDansible chamber adjustingnuts on the rod for limiting the stroke and responding in movement tothevariations in of said diaphragme for varying the amount ofy pressure insaid third named expansible chamber, said second nuid entering saidmixing chamber. said case having a passageway for bringing said 9. Adispensing device comprising a case havrst named expansible chamber intocommuniing a pressure chamber, means for conducting a cation with saidpressurechambena check valve fiuid under pressure into said pressurechamber for preventing cw of fluid from said pressure and forcontrolling the ingress of the fluid into chamber to said first namedexpansible chamber, said chamber, said means being at al1 times in saidpartition having a passageway therein for communication with saidpressure chamber, bringing said second named expansible chamber meansoperable on occasion for controlling the into .communication with saidfirst named eX- egress of iiuid from said chamber, said last namedpanSible chamber, a Check Valve in Said SSCOnd means when in operationoiiering less resistance named passageway for preventing 110W from saidto the now of the iiud than said nrst named iirst named expansiblechamber to said second means to procure a reduction in pressure in saidnamed expansible chamber, saidthird' named eX- pressure chamber, adiaphragm within said case pansible chamber being at all times incommuniforming pumping means, said diaphragm having cation with saidpressure chamber, means for a part integral therewith and forming avalve for conducting a second fluid into said second named bringing thepumping chamber of said pumping eXpansible chamber, a Check Valve fOrypreVentng means into communication with said pressure iiow through saidmeans out of said second named chamber, and means responsive to thepressure eXpansible chamber, means for connecting said in 'said pressurechamber for operating said diaphragms together to cause unitary movementpumping means.

thereof, and adjustable means connected to said 10. A dispensing devicecomprising a oase diaphragm and extending through said case for formedwith a compartment having a movable limiting movement of said diaphragmsto conmember therein and forming an expansible trol the volume of saidrst named eXpanSible chamber on each side thereof, means for conchamber.75 ducting carbonated water under pressure into the expansible chamberon one side of the movable member, said case being further formed with amixing chamber communicating with said expansible chamber, means forconducting syrup into the expansible chamber on of the movable member,means for reducing the pressure of the carbonated Water in said mixingchamber and means operated by such reduction of pressure for operatingthe movable member to discharge the syrup into the carbonated Water inthe mixing chamber.

11. A dispensing device having a mixing chamber, means for conducting auid under pressure into said mixing chamber to create a pressure the oneside 'fil - therein, said'means including a fixed resistancelf' forcontrolling the rate of ingress of the fluid into said chamber, saidmeans being' at alltimes in direct open communication with said chamber,means operable on occasion for controlling the egress of fluid from saidchamber, said last named means when in operationwoffering lessresistance to the flow of the iluid than said first named means toprocure a reduction in pressure in said mixing chamber, means fordelivering another fluid into said mixing chamber and means operableupon reduction of pressure in said mixing vchamber for controlling theoperation of said means for delivering the other fluid into the mixingchamber. v

RICHARD T. CORNELIUS.l

